TY  - BOOK
AU  - Gupta, Prakash C
TI  - Data communications and computer networks
SN  - 9788120348646
U1  - 004.6 GUP 
PY  - 2014///
CY  - New Delhi
PB  - Prentice Hall of India
KW  -  Computer networks
KW  - Data communication
ER  -